Radiator composed of flat water elements



Sept. 15, 1931. E. J. E. DEWOITINE 1,323,738

RADIATOR COMPOSED OF FLAT WATER ELEMENTS Filed Sept. 5. 1928 2 Sheets-Sheet l a? f Dela/affine P 1931- E. J. E. DEW OITINE 1,823,788 I RADIATOR COMPOSED OF FLAT WATER ELEMENTS Filed Sept. 5. 1928 2 Sheets-Sheet 2 NVeN-MK Patented gept. 15, 1931 UNITED STATES PATENT OFFICE summon oomrosnn or FLAT mm ELEMENTS Application filed September 5, 1928, Serial No. 803,992, and in France September 21, 1927.

The present invention relates to improve" ments in radiators composed of flat water elements and, more particularly, to radiators of this type used on airplanes, in which the walls of each element areso pressed as to present projecting ridges which, when the plates are juxtaposed, are connected by soldering in order to provide within the elementthus constituted a continuous sinuous o conduit, the inlet and outlet of which are on one and the same side of the elements.

These improvements are characterized in that thewater inlet and outlet headers are constituted by a double trough each of the parts of which is apertured at suitable intervals in order to be connected by soldering to the water inlet and outlet edges of the flat water elements, this double trough being closed by a plate which provides two distinct 2o circulatlon conduits.

This arrangement has the following important advantage:

At the time of soldering the water inlet and outlet edges of the flat water elements on the headers, these edgesare accessible from the side of the inner face of the troughs, so that it is possible to clear the inlet and outlet orifices which might be partially obturated by an excess of solder.

The accompanying drawings show, by way of example only, a form of construction of a. J

radiator improved according to the invent1on:

Figure 1 is an elevation of a flat water element of the radiator with asection made through a plane mingled with the junction plane of the two plates constituting the said flat water element.

Figure 2 is a cross section made accordin to line AA of Fig. 1.

Fi re 3 is a section made according to line A of Fig. 1, showing a constructional modification.

Figure 4 illustrates, on an enlarged'scale, a ortion of Fig. 3.

igure 5 is a partial plan view corresponding to Fig. 1. e

ig. 6 is an enlarged section showing the manner of joining the flat water elements 50 with the inlet and outlet of the radiator.

Fig. 7 is an enlarged plan view similar to Fig. 5, partly broken away and showing the connection of the water elements with the double trough.

As indicated in the foregoing, each fiat water element is constituted by two plates cut out according to a variable outline and which can, for instance, have the shape shown in Fig. 1. Each of these plates is so pressed as to present projecting ridges 1, 2, 3 located in the same plane as the extreme edges 4 of the plate.

By juxtaposing two plates, so that the projecting ridges 1, 2, 3- as well as the edges 4 of one and the same plate coincide with the corresponding ridges and edges of the other plate, an element is obtained which provides an inner continuous sinuous conduit indicated in Fig. 1 by arrows. The inlet and outlet of this conduit are arranged near each other and are separated by the wall obtained by juxtaposition of the ridges 3. The plates are connected in a fluid-tight manner by soldering of their edges and of the projections in contact. On the platescan beprovided ribs adapted to increase the rigidity of the said plates and which can be pressed internally or externally to the plates.

For. constructing a radiator, a number of flat water elements such as those which have 'ust been described are secured to water inlet and outlet headers.

In accordance with the invention, both headers are constituted by a double trough the elements 5 and 6 of which are apertured. so as to present orifices 7 suitably distributed according to the thickness and spacing apart adopted for the fiat water elements. These latter are secured by the edges of their water inlets and outlets on the corresponding edges of the orifices 7, the fluid-tight assemblage being obtained by soldering. It is to be noted that the solderings can be efiected quite easily through the openings of the troughs 5 and 6. It is thus possible to clear the orifices 7 which might be obturated by an excess of solder. The double trough is then closed by a plate 8 soldered according tothe' lines 9, 10 and 11, so as to delimit two distinct inlet and outlet headers. As indicated 100 above, the plates can be reinforced b ribs such as 12. If the latter are presse outwardly, they can serve for staying the flat water elements of a radiator, as shown in Figs..3 and 4.

It is obvious that the water inlet and outlet headers might be constituted by complete ly closed tubes. This arrangement which, obviously, is less advantageous than that which has just been described, can however be applied to the improved flat water elements without departing from the scope of the invention.

What I claim as my invention and desire to secure by Letters Patent is: i

In a radiator of the class described, a double trough constituting the water inlet and the water outlet for the radiator arranged side by side, fiat water elements, said double trough having apertures registering with the water elements and soldered thereto, and a closure plate overlying the double trough and presenting two distinct conduits.

In testimony whereof I have signed my name to this specification.

EMILE wusu' ruckus DEWOITINE. 

